Leinster are sweating on the availability of Brian O'Driscoll for the Heineken Cup final after the centre picked up an injury in Friday's Magners League play-off semi-final win over Ulster.

The Ireland international was forced off at half-time in the game at the RDS with a suspected knee injury and now faces a race against time to be fit for Saturday week's European showdown with Northampton Saints in Cardiff.

Worse still for Leinster, scrum-half Isaac Boss and prop Mike Ross both had to be replaced before the half-hour mark, while hooker Richardt Strauss was carried off 15 minutes into the second half, leaving head coach Joe Schmidt with a number of injury concerns ahead of the trip to the Millennium Stadium.

"It's really hard to tell right now," the South African is quoted as saying by the Irish Times. "There's three or four guys who are going for scans and we'll just have to take it from there. Drico (O'Driscoll) is renowned as a fast healer and we'd dearly love him to be okay. There's an eight-day turnaround so we'll just have to wait and see."